DependenceMaximization.h

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/*
 * Copyright (c) The Shogun Machine Learning Toolbox
 * Written (w) 2014 Soumyajit De
 * All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are met:
 *
 * 1. Redistributions of source code must retain the above copyright notice, this
 *    list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright notice,
 *    this list of conditions and the following disclaimer in the documentation
 *    and/or other materials provided with the distribution.
 *
 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
 * DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR
 * ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
 * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
 * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
 * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
 *
 * The views and conclusions contained in the software and documentation are those
 * of the authors and should not be interpreted as representing official policies,
 * either expressed or implied, of the Shogun Development Team.
 */

#ifndef DEPENDENCE_MAXIMIZATION_H__
#define DEPENDENCE_MAXIMIZATION_H__

#include <shogun/lib/config.h>
#include <shogun/preprocessor/FeatureSelection.h>

namespace shogun
{

class CFeatures;
class CIndependenceTest;

class CDependenceMaximization : public CFeatureSelection<float64_t>
{
public:
    CDependenceMaximization();

    virtual ~CDependenceMaximization();

    virtual float64_t compute_measures(CFeatures* features, index_t idx);

    virtual CFeatures* remove_feats(CFeatures* features, SGVector<index_t> ranks);

    virtual void set_policy(EFeatureRemovalPolicy policy);

    virtual void set_algorithm(EFeatureSelectionAlgorithm algorithm)=0;

    virtual bool init(CFeatures* features);

    virtual void set_labels(CLabels* labels);

    virtual const char* get_name() const
    {
        return "DependenceMaximization";
    }

protected:
    virtual CFeatures* create_transformed_copy(CFeatures* features, index_t idx);

    CIndependenceTest* m_estimator;

    CFeatures* m_labels_feats;

private:
    void init();

};

}
#endif // DEPENDENCE_MAXIMIZATION_H__